CN104927712A - Waterproof adhesive for pipeline joint and preparation method of waterproof adhesive - Google Patents

Abstract

The invention discloses a waterproof adhesive for a pipeline joint. The waterproof adhesive has the advantages that lactic acid/glycerin organic zirconium is used as a cross-linking agent, so that remarkable thermosensitive cross-linking characteristics are achieved; an ethylene-ethyl acrylate copolymer fiber base solution is used as a thickener, through the cross-linking action, gel with favorable temperature resistance and shear resistance can be formed; the copolymer base solution treated with fibers can improve the surface activity of a copolymer, enhance the cross-linking effect, and improve the viscoelasticity and the thixotropy.

Description

A kind of pipeline connection water-resistant adhesives and preparation method thereof

Technical field

The present invention relates to a kind of tackiness agent, particularly relate to a kind of pipeline connection water-resistant adhesives and preparation method thereof.

Background technology

Traditional vegetable jelly tackiness agent, at high temperature facile hydrolysis, poor to the protectiveness of base material, and the thickening capabilities of ethylene-ethyl acrylate copolymer is strong, heat resistance is good;

The most frequently used linking agent of usual acquisition polymer gel is organic boron or organic zirconium, and organic borate cross-linker heatproof is the highest can only reach 150 DEG C, and organic zirconium can be cross-linked in acid condition, and heatproof is high, can reach 200 DEG C, has broad application prospects.

Summary of the invention

Object of the present invention is just to provide a kind of pipeline connection water-resistant adhesives and preparation method thereof.

The present invention is achieved by the following technical solutions:

A kind of pipeline connection water-resistant adhesives, it is made up of the raw material of following weight parts:

The ammoniacal liquor 2-3 of salpeter solution 0.3-0.4, the ethylene-ethyl acrylate copolymer 200-210 of poly(vinylidene fluoride) 40-50, sisal fibers 10-15, sp-80 2-3.5,10-12mol/l, zirconium oxychloride 1.3-2, lactic acid 0.5-1, glycerol 0.6-1, tetraisocyanate 3-4, lanolin 6-10, tetraethoxy 20-31, polyether Glycols 0.8-2,30-35%, the tertiary butyl are to biphenol 1-3.

A preparation method for pipeline connection water-resistant adhesives as claimed in claim 1, is characterized in that comprising the following steps:

(1) joined by tetraethoxy in the dehydrated alcohol of 1-1.2 times of weight, add the ammoniacal liquor of above-mentioned 30-35%, add the 10-20% of above-mentioned sp-80 weight under agitation condition, add tetraisocyanate, insulated and stirred 30-40 minute at 70-76 DEG C, obtains silicon emulsion;

(2) get the 10-16% of above-mentioned ethylene-ethyl acrylate copolymer weight, mix with poly(vinylidene fluoride), add polyether Glycols, the tertiary butyl under agitation condition to biphenol, insulated and stirred 1-2 hour at 60-80 DEG C, obtains modified copolymer;

(3) above-mentioned sisal fibers is got, joining concentration is infiltrate 3-4 hour in the bisulfite potassium solution of 5-7%, take out post-drying abrasive dust, mix with remaining sp-80, join in 50-60 times of water, drip the salpeter solution of 10-12mol/l, be heated to boiling, add remaining ethylene-ethyl acrylate copolymer, adjustment PH is 6-6.5, be stirred to normal temperature, obtain copolymer fibre base fluid;

(4) joined by zirconium oxychloride in 2-3 times of water, stirring and dissolving, adds lactic acid, glycerol, and regulation system pH value, to 4-5, is uniformly mixed 4-5 hour, obtains organic zirconium crosslinker;

(5) by copolymer fibre base fluid, organic zirconium crosslinker mixing, stir 10-20 minute, add silicon emulsion, modified copolymer, in the constant temperature oil bath of 80-90 DEG C, stir 30-40 minute, discharging cools, and obtains organic zirconium gel;

(6) mixed with each raw material of residue by above-mentioned machine zirconium gel, raised temperature is 170-180 DEG C, insulated and stirred 1-2 hour, adds each raw material of residue, continues to stir 30-40 minute, and through tank cooling, cut off shaping, dehydration, vacuum-drying, to obtain final product.

Advantage of the present invention is:

The present invention with lactic acid/glycerol organic zirconium for linking agent, it has obvious temperature sensitive crosslinking feature, with ethylene-ethyl acrylate copolymer fiber base fluid for viscosifying agent, pass through crosslinked action, the gel with good temperature and shearing sustainability can be formed, adopt the multipolymer base fluid of fiber treatment, multipolymer surfactivity can be improved, promote cross-linking effect, improve visco-elasticity and thixotropy;

Tackiness agent of the present invention is particularly suitable for the bonding of the pipeline material joint such as PE, PVC, and binding property is strong, and resistant, water-fast, resistance to erosion, acid-alkali-corrosive-resisting are good, can meet the environment for use of different pipeline.

Embodiment

Below in conjunction with embodiment, the present invention is described in further detail:

Embodiment 1:

A kind of pipeline connection water-resistant adhesives, it is made up of the raw material of following weight parts:

The ammoniacal liquor 3 of the salpeter solution 0.4 of poly(vinylidene fluoride) 50, sisal fibers 15, sp-80 3.5,12mol/l, ethylene-ethyl acrylate copolymer 210, zirconium oxychloride 1.3, lactic acid 0.5, glycerol 0.6, tetraisocyanate 3, lanolin 10, tetraethoxy 20, polyether Glycols 0.8,30-35%, the tertiary butyl are to biphenol 3.

A preparation method for pipeline connection water-resistant adhesives, comprises the following steps:

(1) joined by tetraethoxy in the dehydrated alcohol of 1.2 times of weight, add the ammoniacal liquor of above-mentioned 35%, add 20% of above-mentioned sp-80 weight, add tetraisocyanate under agitation condition, at 76 DEG C, insulated and stirred 40 minutes, obtains silicon emulsion;

(2) get 16% of above-mentioned ethylene-ethyl acrylate copolymer weight, mix with poly(vinylidene fluoride), add polyether Glycols, the tertiary butyl under agitation condition to biphenol, insulated and stirred 1-2 hour at 80 DEG C, obtains modified copolymer;

(3) above-mentioned sisal fibers is got, joining concentration is infiltrate 4 hours in the bisulfite potassium solution of 7%, take out post-drying abrasive dust, mix with remaining sp-80, join in 60 times of water, drip the salpeter solution of 12mol/l, be heated to boiling, add remaining ethylene-ethyl acrylate copolymer, regulate PH to be 6.5, be stirred to normal temperature, obtain copolymer fibre base fluid;

(4) joined by zirconium oxychloride in 3 times of water, stirring and dissolving, adds lactic acid, glycerol, and regulation system pH value to 5 is uniformly mixed 4 hours, obtains organic zirconium crosslinker;

(5) by copolymer fibre base fluid, organic zirconium crosslinker mixing, stir 20 minutes, add silicon emulsion, modified copolymer, stir 40 minutes in the constant temperature oil bath of 90 DEG C, discharging cools, and obtains organic zirconium gel;

(6) mixed with each raw material of residue by above-mentioned machine zirconium gel, raised temperature is 1180 DEG C, insulated and stirred 2 hours, adds each raw material of residue, continues stirring 40 minutes, and through tank cooling, cut off shaping, dehydration, vacuum-drying, to obtain final product.

Performance test:

Cohesive strength: 3.9MPa;

Viscosity: 3300mPa.s.

Claims (2)

1. a pipeline connection water-resistant adhesives, is characterized in that what it was made up of the raw material of following weight parts:

The ammoniacal liquor 2-3 of salpeter solution 0.3-0.4, the ethylene-ethyl acrylate copolymer 200-210 of poly(vinylidene fluoride) 40-50, sisal fibers 10-15, sp-80 2-3.5,10-12mol/l, zirconium oxychloride 1.3-2, lactic acid 0.5-1, glycerol 0.6-1, tetraisocyanate 3-4, lanolin 6-10, tetraethoxy 20-31, polyether Glycols 0.8-2,30-35%, the tertiary butyl are to biphenol 1-3.

2. a preparation method for pipeline connection water-resistant adhesives as claimed in claim 1, is characterized in that comprising the following steps:

(1) joined by tetraethoxy in the dehydrated alcohol of 1-1.2 times of weight, add the ammoniacal liquor of above-mentioned 30-35%, add the 10-20% of above-mentioned sp-80 weight under agitation condition, add tetraisocyanate, insulated and stirred 30-40 minute at 70-76 DEG C, obtains silicon emulsion;

(2) get the 10-16% of above-mentioned ethylene-ethyl acrylate copolymer weight, mix with poly(vinylidene fluoride), add polyether Glycols, the tertiary butyl under agitation condition to biphenol, insulated and stirred 1-2 hour at 60-80 DEG C, obtains modified copolymer;

(3) above-mentioned sisal fibers is got, joining concentration is infiltrate 3-4 hour in the bisulfite potassium solution of 5-7%, take out post-drying abrasive dust, mix with remaining sp-80, join in 50-60 times of water, drip the salpeter solution of 10-12mol/l, be heated to boiling, add remaining ethylene-ethyl acrylate copolymer, adjustment PH is 6-6.5, be stirred to normal temperature, obtain copolymer fibre base fluid;

(4) joined by zirconium oxychloride in 2-3 times of water, stirring and dissolving, adds lactic acid, glycerol, and regulation system pH value, to 4-5, is uniformly mixed 4-5 hour, obtains organic zirconium crosslinker;

(5) by copolymer fibre base fluid, organic zirconium crosslinker mixing, stir 10-20 minute, add silicon emulsion, modified copolymer, in the constant temperature oil bath of 80-90 DEG C, stir 30-40 minute, discharging cools, and obtains organic zirconium gel;

(6) mixed with each raw material of residue by above-mentioned machine zirconium gel, raised temperature is 170-180 DEG C, insulated and stirred 1-2 hour, adds each raw material of residue, continues to stir 30-40 minute, and through tank cooling, cut off shaping, dehydration, vacuum-drying, to obtain final product.